Switch to nonmonotone linesearch #132

Job	Run time
ubuntu-latest - Env all Release	10m 12s
ubuntu-latest - Env all Debug	21m 15s
ubuntu-latest - Env all-py39 Release	10m 43s
ubuntu-latest - Env all-py39 Debug	21m 21s
macos-latest - Env all Release	1m 11s
macos-latest - Env all Debug	3m 27s
macos-latest - Env all-py39 Release	5m 40s
macos-latest - Env all-py39 Debug	7m 26s
macos-13 - Env all Release	11m 28s
macos-13 - Env all Debug	7m 41s
macos-13 - Env all-py39 Release	2m 1s
macos-13 - Env all-py39 Debug	13m 22s
check-macos-linux-pixi	4s
	1h 55m 51s

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